WELCOME

INTRODUCING

STUDENTS ARE GOING TO INTRODUCE THEMSELVES, THEIR SCHOOL AND THEIR COUNTRY.

1st step

Part 1 PEOPLE AND CHEMISTRYINTRODUCE THE TOPIC■ Do you have any chemicals/chemical products in your home?■ What chemicals/chemical products do you have in your home?

2nd step

Part 2 CHEMISTRY IN OUR HOMES

In Parts 1 and 2 students find out more about the manychemical products which people use in their homes. They alsoexamine the labelling of these products and learn about theinternational symbols for labelling chemical substances.They have an opportunity to make and test a chemicalproduct

STEP 3 LIVING WITH CHEMISTRY

STEP 3 LIVING WITH CHEMISTRYResearch by interview, or from secondary sources, to investigate a local story related to chemistry and to discover an example of the importance of chemistry to the local, regional or national economy.

giovedì 23 aprile 2009

SHAMPOO:The most common ingredient in shampoos is known as straight-chain alkyl benzene sulfonates. An example is Ammonium Lauryl Sulfate, or its sodium relative, or the slightly larger related molecule ammonium lauryl ether sulfate, sometimes abbreviated as ammonium laureth sulfate.

DEODORANT:Natural mineral, Salts, Ammonium alum

SOAP:Today, soaps are made from fats and oils that react with lye (sodium hydroxide). Solid fats like coconut oil, palm oil, tallow (rendered beef fat), or lard (rendered pork fat), are used to form bars of soap that stay hard and resist dissolving in the water left in the soap dish.

TOOTH-PASTE:

Phospate of fluorine, NaF

DETERGENT:Detergents are cleansing products that may include barsoaps and liquid gels for cleaning the hands, face or body; detergent powders or cakes for laundry cleaning purposes;